[Bug c++/69283] Auto deduction fails when ADL is required

[gccbugs at astrant dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69283

--- Comment #1 from gccbugs at astrant dot net ---
I think this may be a duplicate of
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67835.